243693331773 has 32 divisors (see below), whose sum is σ = 371375020800. Its totient is φ = 141214166016.

The previous prime is 243693331699. The next prime is 243693331781. The reversal of 243693331773 is 377133396342.

243693331773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243693331773 - 2²⁹ = 243156460861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243693331073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3547918 + ... + 3615951.

It is an arithmetic number, because the mean of its divisors is an integer number (11605469400).

Almost surely, 2^243693331773 is an apocalyptic number.

243693331773 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

243693331773 is a deficient number, since it is larger than the sum of its proper divisors (127681689027).

243693331773 is a wasteful number, since it uses less digits than its factorization.

243693331773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7163941.

The product of its digits is 5143824, while the sum is 51.

The spelling of 243693331773 in words is "two hundred forty-three billion, six hundred ninety-three million, three hundred thirty-one thousand, seven hundred seventy-three".